CBSE 2024, Set 1

Question

Assertion (A): The mutual inductance between two coils is maximum when the coils are wound on each other.
Reason (R): The flux linkage between two coils is maximum when they are wound on each other.

Select the correct option: A). Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A). B). Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A). C). Assertion (A) is true, but Reason (R) is false. D). Assertion (A) is false and Reason (R) is also false.

Edvaya · Accepted Answer

The correct answer is Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).. **SOLUTION** **Assertion (A) is True:** Mutual inductance is indeed maximum when two coils are coaxially wound one over the other. **Reason (R) is True:** This arrangement ensures that the coefficient of coupling ($k$) is nearly $1$. In this physical setup, virtually all the magnetic flux produced by the primary coil successfully links with the secondary coil, maximizing the flux linkage. Therefore, Reason (R) is the correct and direct explanation for Assertion (A).

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Physics > Magnetism Induction And Alternating Current > Electromagnetic Induction

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